...The four are here afforded species rank since morphological similarityand allopatry are not sufficient grounds for the assumption of geneticexchange... 
John D. Lynch 「A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope」
...Adaptive relicts of morphological nature have been manytimes documented, but characteristics associated with seasonality andtiming schedules have not...
Richard F. Johnston 「The Breeding Birds of Kansas」
...stylifer, the turkey louse) is of greatinterest from a morphological and developmental point of view, as theantennæ are described and figured by Denny as being "in the malescheliform (Fig...
Alpheus Spring Packard 「Our Common Insects」
...In southernBritish Columbia the morphological differences are not somarked as farther south along the Pacific Coast...
James S. Findley 「Speciation of the Wandering Shrew」
...Such similarities of craniabetween Calomys and Baiomys may reflect convergence, but thetotal of internal and external morphological characters shared, Ithink reflects true relationships...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...The combination of morphological and behavioral charactersin the living pygmy mice warrants generic status for them...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...On the basis of the morphological characters, as pointed outfor Hyla robustofemora by Taylor (1940:392), Hyla crassa is amember of the Hyla bistincta group...
William E. Duellman 「A Review of the Frogs of the Hyla bistincta Group」
...nelsoni(Tepic, Nayarit—known from a single adult male) are closely related but areconsidered distinct because of their morphological differences and widelyseparated known ranges...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Each of the external morphological characters used in the systematictreatment of Ptychohyla, as well as the nature of the tongue,is discussed below...
William E. Duellman 「A Review of the Middle American Tree Frogs of the Genus Ptychohyla」
...The most obvious morphological difference isthat the head is noticeably narrower in H...
William E. Duellman 「Middle American Frogs of the Hyla microcephala Group」
...Taylor (1938:421) and Smith and Taylor (1948:78) excludedstaufferifrom theeximiagroup on the basis of morphological characteristics...
Juan R. León 「The Systematics of the Frogs of the Hyla Rubra Group in Middle America」
...The proof of it lies in the whole morphological literature of thelast three decades...
Ernst Haeckel 「The Evolution of Man」
...The primitive worms ( Platodaria) are very small flat worms of simpleconstruction, but of great morphological and phylogenetic interest...
Ernst Haeckel 「The Evolution of Man」
...He showed convincingly that the ideas of hand andfoot had been wrongly defined, and had been improperly based on physiologicalinstead of morphological grounds...
Ernst Haeckel 「The Evolution of Man」
...278–282); and still greater is the morphological distance between theseand the lowest apes (the Cynopitheca)...
Ernst Haeckel 「The Evolution of Man」
...In cleavage the two products are equal in ageand morphological value...
Ernst Haeckel 「The Evolution of Man」
...These feathers are different from any whichI have been able to find attached to the bodies of birds, and are thusidentified from morphological rather than from other reasons...
Jesse Walter Fewkes 「Archeological Expedition to Arizona in 1895」
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